clang-tidy - mpi-buffer-deref

This check verifies if a buffer passed to an MPI (Message Passing Interface)
function is sufficiently dereferenced. Buffers should be passed as a single
pointer or array. As MPI function signatures specify void* for their buffer
types, insufficiently dereferenced buffers can be passed, like for example as
double pointers or multidimensional arrays, without a compiler warning emitted.

Examples:

// A double pointer is passed to the MPI function.char*buf;MPI_Send(&buf,1,MPI_CHAR,0,0,MPI_COMM_WORLD);// A multidimensional array is passed to the MPI function.shortbuf[1][1];MPI_Send(buf,1,MPI_SHORT,0,0,MPI_COMM_WORLD);// A pointer to an array is passed to the MPI function.short*buf[1];MPI_Send(buf,1,MPI_SHORT,0,0,MPI_COMM_WORLD);